Re: ATM Advise, please...

[Donovan Buck <donovan@bravoz.com>]

>Maybe easier, better, & "funner", take a solar electricity-
>powered approach & still be "perpetual".
>
>       END VIEW
>          ___ <-- Tabs guarentee small equal shading when
>           |    pointed at sun, tabs bendable for response adjust
>           | <--Wood or sheetmetal baffle, aluminize
>           |  both sides via aluminum foil & contact cement
>       ____|____ <--2 or 4 solar cells, 1 or 2 each side of baffle
>
>You'll need 2 of these, of course, both mounted on the tube
>perpendicular to each other w/the wires running down to the motors.
>
>Something like the following wiring may work correctly-
>
>          D1            D2
>    |-----|>|-----x-----|>|-----|
>    |             |             |
>SC1 |     1.5 v.  |             |
> ___|___   DC motor>           _|_ SC2
>   ---             >          -----
>    |              >            |
>    |             |             |
>    |_____________|_____________|
>
>-or maybe the cells wired back-to-back, or at most, some bridge
>arrangement or 2 opposing motors- anyway, it's basically simple,
>whatever the correct solution. (Where's that center-tapped DC
>motor when you need one?:)
>
>You'll need 2 of these, of course, 1 for each axis. Now
>that I look at it, at least 2 or maybe 3 cells wired in
>series may be needed on each side of the motor.
>The diodes may not even be neccessary, or maybe I'm not
>thinking clearly (haven't had my coffee yet this morning:) &
>this ain't quite the right way to do it.


That's a neat idea. But assuming I understand this correctly (and I 
probably don't) wouldn't clouds be a pretty significant problem?


Donovan Buck
Bravo Zulu! Interactive
www.bravoz.com

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